View Compilation Error

0_0_27277733_16240.cpp: In function 'void Sort()':
0_0_27277733_16240.cpp:33:13: error: 'ans' was not declared in this scope
             ans += TotalArea(i);
             ^
0_0_27277733_16240.cpp:40:53: error: 'ans' was not declared in this scope
     cout<<setiosflags(ios::fixed)<<setprecision(2)<<ans;
                                                     ^